CN110165215A - A kind of lithium battery positive and negative anodes dispersing agent and preparation method thereof - Google Patents
A kind of lithium battery positive and negative anodes dispersing agent and preparation method thereof Download PDFInfo
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- CN110165215A CN110165215A CN201810121298.XA CN201810121298A CN110165215A CN 110165215 A CN110165215 A CN 110165215A CN 201810121298 A CN201810121298 A CN 201810121298A CN 110165215 A CN110165215 A CN 110165215A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present invention relates to lithium battery positive and negative anodes dispersing agents and preparation method thereof, and dispersing agent is made of the composition of following parts by weight: 20-40 parts of polyproplyene block object, 25-40 parts of acetylenic glycols polymer, 22-40 parts of chain extender, 5-10 parts of electron charge stabilizer.The dispersion efficiency of dispersing agent of the invention is high；Lithium battery accumulation of energy performance can be improved；And without toxic and harmful gas and carcinogenic substance, there is no bio-toxicity.
Description
Technical field
The invention belongs to technical field of lithium batteries, are related to a kind of lithium battery positive and negative anodes dispersing agent more particularly to a kind of lithium electricity
Pond positive and negative anodes dispersing agent and preparation method thereof.
Background technique
In the industries such as lithium battery positive and negative anodes, the dispersion of positive and negative pole material is the important link of manufacturing technology, and pigment is in lithium
Solid-liquid dispersion is formed in battery plus-negative plate material, dispersion is thermodynamically unstable.Lithium battery storage,
Aggregation (reunion) may occur during construction application.
Stable homogeneous dispersion in order to obtain, it is often necessary to use dispersing agent.Traditional small molecule dispersing agent, system it is steady
Qualitative difference is easy the desorption from particle surface and reassembles or precipitate so as to cause scattered positive and negative pole material particle, to lithium
Accumulation of energy property also adversely affects in battery preparation.
Macromolecule dispersing agent has become the dispersant with high efficiency of a new generation in recent years, aobvious to being dispersed with for lithium battery new material
Write effect, especially have sizable effect to wetability, stability etc., to lithium battery new diseases performance also have compared with
It is big to improve.
Macromolecule dispersing agent refer to molecular mass in thousands of above high-molecular compounds with surface-active, substantially
Belong to surfactant, and in the macromolecule dispersing agent of various structure types, block type polymer dispersant is most effective.But
It is that the wetability of existing macromolecule dispersing agent is poor, contains toxic and harmful gas simultaneously, not environmentally.
In view of the drawbacks described above of the prior art, there is an urgent need to develop a kind of novel lithium battery positive and negative anodes dispersing agent and its system
Preparation Method.
Summary of the invention
It is an object of the invention to overcome disadvantage existing in the prior art, provide a kind of lithium battery positive and negative anodes dispersing agent and
Preparation method, which overcome the materials such as current lithium battery industry positive and negative anodes ternary lithium, phosphate, graphene, carbon nanotubes point
Shed existing agglomeration traits.
To achieve the goals above, the invention provides the following technical scheme:
A kind of lithium battery positive and negative anodes dispersing agent, which is characterized in that it is made of the composition of following parts by weight: polyproplyene block object
20-40 parts, 25-40 parts of acetylenic glycols polymer, 22-40 parts of chain extender, 5-10 parts of electron charge stabilizer.
Further, wherein the polyproplyene block object is styrene-acrylate, dimethylacrylate, acrylic acid
Butyl ester or poly- carbon acrylate.
Further, wherein the acetylenic glycols polymer be 2,4,7,9- tetramethyl -5- decine -4,7- glycol, 2,5,
8,11- tetramethyl -6- dodecyne -5,8- glycol, dimethyloctyne diol, 2,5- dimethyl -3- hexin -2,5- glycol, 1,4-
Dihydroxy -2- butine.
Still further, wherein, the chain extender is polypropylene glycol, 1,4-butanediol, 1,6- hexylene glycol, glycerol, three hydroxyls
Methylpropane, diethylene glycol (DEG), triethylene glycol, neopentyl glycol, sorbierite, diethylaminoethanol, PPG400/600/800/100, poly- the third two
Alcohol acrylate or polyethers F-6.
Again further, wherein the electron charge stabilizer is primary amine, tertiary amine, diethanol amine, triethanolamine, second
Base morpholine or N, N dimethyl ethanol amine.
Furthermore, wherein the lithium battery positive and negative anodes dispersing agent is made of the composition of following parts by weight: polyproplyene block object
25 parts, 35 parts of acetylenic glycols polymer, 30 parts of chain extender, 10 parts of electron charge stabilizer.
Or, wherein the lithium battery positive and negative anodes dispersing agent is made of the composition of following parts by weight: polyproplyene block object
25 parts, 25 parts of acetylenic glycols polymer, 40 parts of chain extender, 10 parts of electron charge stabilizer.
Again or, wherein the lithium battery positive and negative anodes dispersing agent is made of the composition of following parts by weight: polyproplyene block object
35 parts, 35 parts of acetylenic glycols polymer, 22 parts of chain extender, 8 parts of electron charge stabilizer.
Or, wherein the lithium battery positive and negative anodes dispersing agent is made of the composition of following parts by weight: polyproplyene block object
40 parts, 25 parts of acetylenic glycols polymer, 30 parts of chain extender, 5 parts of electron charge stabilizer.
Again or, wherein the lithium battery positive and negative anodes dispersing agent is made of the composition of following parts by weight: polyproplyene block object
20 parts, 40 parts of acetylenic glycols polymer, 35 parts of chain extender, 5 parts of electron charge stabilizer.
In addition, the present invention also provides a kind of preparation methods of above-mentioned lithium battery positive and negative anodes dispersing agent, which is characterized in that including
Following steps:
(1), crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, the chain extender is added, adds the alkynes
Diol polymer simultaneously heats, and melts within stirring 2 hours under conditions of being heated to the revolving speed of 45 DEG C, agitating device and being 600 revs/min
At the mixed solution of acetylenic glycols；The electron charge stabilizer of 70-80% is added drop-wise to by institute by the constant pressure funnel again
It states in mixed solution, and controls to be added dropwise to complete in 30 minutes, after being added dropwise to complete, be heated to 55 DEG C, and by agitating device
Revolving speed increases to be reacted for 1200 revs/min；Reaction 2.5 hours, reaction was completed, obtains crude product, that is, poly- propilolic alcohol；
(2), purification of crude product
The crude product that will be obtained, that is, poly- propilolic alcohol are added in 100 DEG C of evaporator and carry out rectifying, vacuumize, filter,
To remove the substance of unreacted monomer and small molecule, purer product is obtained；
(3), dispersing agent is prepared
The poly- propilolic alcohol after purification is added in three necks dispersion bottle, is then added to the polyproplyene block object described
Three necks disperse in bottle, then the electron charge stabilizer of remaining 20-30% is added in the three necks dispersion bottle, by pH
Value is adjusted to 7~8, and constant temperature stirs 1 hour, obtained weak yellow liquid is exactly dispersing agent at this time at 60 DEG C.
Compared with existing macromolecule dispersing agent and preparation method thereof, lithium battery positive and negative anodes dispersing agent of the invention and its system
Preparation Method has following advantageous effects:
1, it is to overcome current lithium battery industry positive and negative anodes ternary with the macromolecule hyper-dispersant of novel unique linear structure
The agglomeration traits that the dispersion of the materials such as lithium, phosphate, graphene, carbon nanotubes occurs.
2, its dispersion efficiency is high, can prepare the lithium battery positive and negative anodes dispersion pulp and carbon nanotubes, graphene slurry of high-content
Material；
3, it can improve lithium battery accumulation of energy performance, can improve the good storage of the inorganic rare earths material such as carbon nanotubes, graphene simultaneously
Deposit stability and mobility；
4, it can also be applied to the special inorganic material dispersion such as water paint ink, mill base and interface modification.
5, it is free of toxic and harmful gas and carcinogenic substance, also without containing alkane solvents such as heavy metal and APEO, and does not have
Bio-toxicity.
Specific embodiment
Below with reference to embodiment, the present invention is further described, and the content of embodiment is not as to protection scope of the present invention
Limitation.
The present invention, which provides a kind of the novel of efficient wetting lithium battery positive and negative anodes dispersion based on acetylenic glycols, has unique line style
The macromolecule hyper-dispersant of structure.
The raw material of the dispersing agent specifically includes that
Polyproplyene block object: styrene-acrylate, dimethylacrylate, butyl polyacrylate, poly- carbon acrylate etc..
Acetylenic glycols polymer: 2,4,7,9- tetramethyl -5- decine -4,7- glycol, 2,5,8,11- tetramethyl -6- dodecyne -
5,8- glycol, dimethyloctyne diol, 2. 5- dimethyl -3- hexin -2,5- glycol, 1,4- dihydroxy -2- butine etc..
Electron charge stabilizer: primary amine, tertiary amine, diethanol amine, triethanolamine, ethyl morpholine, N, N dimethyl ethanol amine
Deng.
Chain extender: polypropylene glycol, 1,4-butanediol (BDO), 1,6- hexylene glycol, glycerol, trimethylolpropane, diethylene glycol (DEG)
(DEG), triethylene glycol, neopentyl glycol (NPG), sorbierite, diethylaminoethanol (DEAE), PPG400/600/800/1000- poly- third
Butanediol acrylate-polyethers F-6 etc..
[formula 1]
25 parts of poly- carbon acrylate, 35 parts of 2,4,7,9- tetramethyl -5- decine -4,7- glycol, 30 parts of neopentyl glycol (NPG),
10 parts of diethanol amine.
Preparation method are as follows:
1, crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, 30 parts of addition neopentyl glycol (NPG) as expansion
Chain agent adds 35 parts of glycol of 2,4,7,9- tetramethyl -5- decine -4,7-, later in the revolving speed for being heated to 45 DEG C, agitating device
Stirring is melted into the mixed solution of acetylenic glycols for 2 hours under conditions of being 600 revs/min；Added again by the constant pressure funnel
Enter 8 parts of diethanol amine, it is desirable that be added dropwise to complete, after being added dropwise to complete, begin to warm up to 55 DEG C, mixing speed, which increases, is in 30 minutes
1200 revs/min；Reaction 2.5 hours, reaction was completed, obtains crude product (poly- propilolic alcohol).
2, purification of crude product
The evaporator that obtained crude product (poly- propilolic alcohol) is added to 100 DEG C is subjected to rectifying, vacuumizes, filter, by unreacted
Monomer and the substance of small molecule remove, and obtain purer product.
3, dispersing agent is prepared
Product (poly- propilolic alcohol) after purification is added in three necks dispersion bottle, 25 parts of poly- carbon acrylate are then added to three necks
Disperse in bottle, then 2 parts of diethanol amine that a upper technique remains slowly are added drop-wise in three-necked bottle, pH value is adjusted to 7~8, constant temperature
At 55 DEG C, 1 hour is stirred, obtained weak yellow liquid is exactly the dispersing agent at this time.
[formula 2]
25 parts of dimethylacrylate, 25 parts of 2,4,7,9- tetramethyl -5- decine -4,7- glycol, polypropylene glycol, 40 parts, three second
10 parts of hydramine.
Preparation method are as follows:
1, crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, 40 parts of polypropylene glycol is added as chain extension
Agent adds 25 parts of glycol of 2,4,7,9- tetramethyl -5- decine -4,7-, is in the revolving speed for being heated to 45 DEG C, agitating device later
Stirring is melted into the mixed solution of acetylenic glycols for 2 hours under conditions of 600 revs/min；8 are added by the constant pressure funnel again
Part triethanolamine, it is desirable that be added dropwise to complete in 30 minutes, after being added dropwise to complete, begin to warm up to 55 DEG C, by the revolving speed of agitating device
1200 revs/min are increased to, is reacted 2.5 hours, reaction was completed, obtains crude product (poly- propilolic alcohol).
2, purification of crude product
The evaporator that obtained crude product (poly- propilolic alcohol) is added to 100 DEG C is subjected to rectifying, vacuumizes, filter, by unreacted
Monomer and the substance of small molecule remove, and obtain purer product.
3, dispersing agent is prepared
Product (poly- propilolic alcohol) after purification is added in three necks dispersion bottle, is then added to 25 parts of dimethylacrylates
Three necks disperse in bottle, then the 2 parts of triethanolamines remained in a upper technique are slowly added drop-wise in three necks dispersion bottle, and pH value is adjusted to
7~8, constant temperature stirs 1 hour, obtained weak yellow liquid is exactly dispersing agent at this time at 60 DEG C.
[formula 3]
35 parts of styrene-acrylate, 35 parts of 2,4,7,9- tetramethyl -5- decine -4,7- glycol, 22 parts of polyethers F-6, diethanol
8 parts of amine.
Preparation method are as follows:
1, crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, 22 parts of polyethers F-6 are added as chain extender,
Add 35 parts of glycol of 2,4,7,9- tetramethyl -5- decine -4,7-, the revolving speed for being heated to 45 DEG C, agitating device be 600 turns/
The mixed solution for being melted into acetylenic glycols for 2 hours stirs in the condition system of minute；6.5 part two is added by the constant pressure funnel again
Ethanol amine, it is desirable that be added dropwise to complete in 30 minutes, after being added dropwise to complete, begin to warm up to 55 DEG C, the revolving speed of agitating device is increased
To 1200 revs/min, react 2.5 hours, reaction was completed, obtains crude product (poly- propilolic alcohol).
2, purification of crude product
The evaporator that obtained crude product (poly- propilolic alcohol) is added to 100 DEG C is subjected to rectifying, vacuumizes, filter, by unreacted
Monomer and the substance of small molecule remove, and obtain purer product.
3, dispersing agent is prepared
Product (poly- propilolic alcohol) after purification is added in three necks dispersion bottle, 35 parts of styrene-acrylates are then added to three
Neck disperses in bottle, then 1.5 parts of diethanol amine that a upper technique remains slowly are added drop-wise in three necks dispersion bottle, and pH value is adjusted to 7
~8, constant temperature stirs 1.5 hours, obtained weak yellow liquid is exactly dispersing agent at this time at 55 DEG C.
[formula 4]
40 parts of butyl polyacrylate, 25 parts of 2,4,7,9- tetramethyl -5- decine -4,7- glycol, 30 parts of polyethers F-6, triethanolamine
5 parts.
Preparation method are as follows:
1, crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, 30 parts of polyethers F-6 are added as chain extender,
Add 25 parts of glycol of 2,4,7,9- tetramethyl -5- decine -4,7-, the revolving speed for being heated to 45 DEG C, agitating device be 600 turns/
Stirring is melted into the mixed solution of acetylenic glycols for 2 hours under conditions of minute；3.5 parts of triethanolamines are added by dropping funel again,
It is required that be added dropwise to complete in 30 minutes, after being added dropwise to complete, begin to warm up to 55 DEG C, the revolving speed of agitating device be increased to 1200 turns/
Minute, it reacts 2.5 hours, reaction was completed, obtains crude product (poly- propilolic alcohol)；
2, purification of crude product
The evaporator that obtained crude product (poly- propilolic alcohol) is added to 100 DEG C is subjected to rectifying, vacuumizes, filter, by unreacted
Monomer and the substance of small molecule remove, and obtain purer product；
3, dispersing agent is prepared
The product (poly- propilolic alcohol) that reaction is obtained is added in three necks dispersion bottle, and 40 parts of butyl acrylates are then added to three necks
Disperse in bottle, then 1.5 parts of triethanolamines that a upper technique remains slowly are added drop-wise in three neck minutes bottle, pH value is adjusted to 7~
8, constant temperature stirs 1.5 hours, obtained weak yellow liquid is exactly dispersing agent at this time at 60 DEG C.
[formula 5]
20 parts of poly- carbon acrylate, 40 parts of 2,5,8,11- tetramethyl -6- dodecyne -5,8- glycol, 35 parts of polypropylene glycol, three second
5 parts of hydramine.
Preparation method are as follows:
1, crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, 35 parts of polypropylene glycols are added as chain extender,
40 parts of glycol of 2,5,8,11- tetramethyl -6- dodecyne -5,8- is added, is 600 in the revolving speed for being heated to 45 DEG C, agitating device
Stirring is melted into the mixed solution of acetylenic glycols for 2 hours under conditions of rev/min；3.5 are added by the constant pressure funnel again
Part triethanolamine, it is desirable that be added dropwise to complete in 30 minutes, after being added dropwise to complete, begin to warm up to 55 DEG C, and agitating device is turned
It is 1200 revs/min that speed, which increases, is reacted 2.5 hours, reaction was completed, obtains crude product (poly- propilolic alcohol).
2, purification of crude product
The evaporator that obtained crude product (poly- propilolic alcohol) is added to 100 DEG C is subjected to rectifying, vacuumizes, filter.By unreacted
Monomer and the substance of small molecule remove, and obtain purer product；
3, dispersing agent is prepared
The product (poly- propilolic alcohol) that reaction is obtained is added in three necks dispersion bottle, and 20 parts of poly- carbon acrylate are then added to three
Neck disperses in bottle, then a upper technique is remained 1.5 parts of triethanolamines and is slowly added drop-wise in three necks dispersion bottle, pH value is adjusted to 7~
8, constant temperature stirs 1.5 hours at 55 DEG C, and the liquid for talking Huang obtained at this time is exactly dispersing agent.
Lithium battery positive and negative anodes dispersing agent of the invention is that a kind of lithium battery efficiently soaked based on acetylenic glycols preparation is positive and negative
Pole dispersing agent, dispersion efficiency is high, can prepare the lithium battery positive and negative anodes dispersion pulp and carbon nanotubes, graphene slurry of high-content
Material.Meanwhile lithium battery accumulation of energy performance can be improved, the nothings such as lithium battery positive and negative pole material, carbon nanotubes, graphene can be improved simultaneously
The good storage stability and mobility of machine rare earth material.In addition, it can also be applied to the spies such as water paint ink, mill base
Different inorganic material dispersion and interface modification.Furthermore toxic and harmful gas and carcinogenic substance are free of, and the weight of American-European strict control
The alkane solvents such as metal, APEO, without bio-toxicity.
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.Here all embodiments can not be exhaustive.It is all to belong to skill of the invention
The obvious changes or variations that art scheme is extended out are still in the scope of protection of the present invention.
Claims (11)
1. a kind of lithium battery positive and negative anodes dispersing agent, which is characterized in that it is made of the composition of following parts by weight: polyproplyene block object
20-40 parts, 25-40 parts of acetylenic glycols polymer, 22-40 parts of chain extender, 5-10 parts of electron charge stabilizer.
2. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that the polyproplyene block object is benzene second
Alkene acrylate, dimethylacrylate, butyl acrylate or poly- carbon acrylate.
3. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that the acetylenic glycols polymer is 2,4,
7,9- tetramethyl -5- decine -4,7- glycol, 2,5,8,11- tetramethyl -6- dodecyne -5,8- glycol, dimethyloctyne diol,
2,5- dimethyl -3- hexin -2,5- glycol, 1,4- dihydroxy -2- butine.
4. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that the chain extender be polypropylene glycol,
1,4- butanediol, 1,6-HD, glycerol, trimethylolpropane, diethylene glycol (DEG), triethylene glycol, neopentyl glycol, sorbierite, diethylamino
Base ethyl alcohol, PPG400/600/800/100, polypropylene glycol acrylate or polyethers F-6.
5. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that the electron charge stabilizer is primary
Amine, tertiary amine, diethanol amine, triethanolamine, ethyl morpholine or N, N dimethyl ethanol amine.
6. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that its by following parts by weight composition group
At: 25 parts of polyproplyene block object, 35 parts of acetylenic glycols polymer, 30 parts of chain extender, 10 parts of electron charge stabilizer.
7. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that its by following parts by weight composition group
At: 25 parts of polyproplyene block object, 25 parts of acetylenic glycols polymer, 40 parts of chain extender, 10 parts of electron charge stabilizer.
8. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that its by following parts by weight composition group
At: 35 parts of polyproplyene block object, 35 parts of acetylenic glycols polymer, 22 parts of chain extender, 8 parts of electron charge stabilizer.
9. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that its by following parts by weight composition group
At: 40 parts of polyproplyene block object, 25 parts of acetylenic glycols polymer, 30 parts of chain extender, 5 parts of electron charge stabilizer.
10. lithium battery positive and negative anodes dispersing agent according to claim 1, which is characterized in that its by following parts by weight composition
Composition: 20 parts of polyproplyene block object, 40 parts of acetylenic glycols polymer, 35 parts of chain extender, 5 parts of electron charge stabilizer.
11. a kind of preparation method of lithium battery positive and negative anodes dispersing agent of any of claims 1-10, which is characterized in that
The following steps are included:
(1), crude product is synthesized
In the four-necked bottle equipped with agitating device, thermometer and constant pressure funnel, the chain extender is added, adds the alkynes
Diol polymer simultaneously heats, and melts within stirring 2 hours under conditions of being heated to the revolving speed of 45 DEG C, agitating device and being 600 revs/min
At the mixed solution of acetylenic glycols；The electron charge stabilizer of 70-80% is added drop-wise to by institute by the constant pressure funnel again
It states in mixed solution, and controls to be added dropwise to complete in 30 minutes, after being added dropwise to complete, be heated to 55 DEG C, and by agitating device
Revolving speed increases to be reacted for 1200 revs/min；Reaction 2.5 hours, reaction was completed, obtains crude product, that is, poly- propilolic alcohol；
(2), purification of crude product
The crude product that will be obtained, that is, poly- propilolic alcohol are added in 100 DEG C of evaporator and carry out rectifying, vacuumize, filter,
To remove the substance of unreacted monomer and small molecule, purer product is obtained；
(3), dispersing agent is prepared
The poly- propilolic alcohol after purification is added in three necks dispersion bottle, is then added to the polyproplyene block object described
Three necks disperse in bottle, then the electron charge stabilizer of remaining 20-30% is added in the three necks dispersion bottle, by pH
Value is adjusted to 7~8, and constant temperature stirs 1 hour, obtained weak yellow liquid is exactly dispersing agent at this time at 60 DEG C.
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Cited By (1)
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| CN114050260A (en) * | 2021-10-22 | 2022-02-15 | 深圳市研一新材料有限责任公司 | Positive electrode film additive composition, positive electrode film additive, positive electrode plate and secondary battery |
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| CN103894108A (en) * | 2012-12-28 | 2014-07-02 | 南通市晗泰化工有限公司 | Block-type water-based polymer dispersant |
| CN105860811A (en) * | 2016-06-22 | 2016-08-17 | 安徽汇利涂料科技有限公司 | Waterborne polyurethane paint and method for preparing same |
| CN106519944A (en) * | 2016-11-09 | 2017-03-22 | 深圳市金升彩包装材料有限公司 | Water-based transfer paint composition for printing and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114050260A (en) * | 2021-10-22 | 2022-02-15 | 深圳市研一新材料有限责任公司 | Positive electrode film additive composition, positive electrode film additive, positive electrode plate and secondary battery |
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